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ndb/cs: add -6 flag for v6 only lookups and "ipv4" control message to toggle v4 lookups.

front
cinap_lenrek 2018-07-10 19:57:55 +02:00
parent a8a6429204
commit 24611cf5ed
2 changed files with 23 additions and 3 deletions
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12
sys/man/8/ndb
View File

@ -35,7 +35,7 @@ query, ipquery, mkhash, mkdb, mkhosts, cs, csquery, dns, dnstcp, dnsquery, dnsde
.br .br
.B ndb/cs .B ndb/cs
[ [
.B -4n .B -46n
] [ ] [
.B -f .B -f
.I dbfile .I dbfile
@ -257,10 +257,18 @@ The options are:
Only look up IPv4 addresses (A records) when consulting DNS. Only look up IPv4 addresses (A records) when consulting DNS.
The default is to also look up v6 addresses (AAAA records). The default is to also look up v6 addresses (AAAA records).
Writing Writing
.L ipv4
to
.B /net/cs
will toggle IP v4 look-ups.
.TP
.B -6
Only look up IPv6 addresses in DNS.
Writing
.L ipv6 .L ipv6
to to
.B /net/cs .B /net/cs
will toggle IP v6 look-ups. toggles v6 lookups.
.TP .TP
.B -f .B -f
supplies the name of the data base file to use, supplies the name of the data base file to use,

14
sys/src/cmd/ndb/cs.c
View File

@ -196,7 +196,7 @@ nstrcpy(char *to, char *from, int len)
void void
usage(void) usage(void)
{ {
fprint(2, "usage: %s [-dn] [-f ndb-file] [-x netmtpt]\n", argv0); fprint(2, "usage: %s [-46dn] [-f ndb-file] [-x netmtpt]\n", argv0);
exits("usage"); exits("usage");
} }
@ -238,6 +238,9 @@ main(int argc, char *argv[])
case '4': case '4':
lookipvers = V4; lookipvers = V4;
break; break;
case '6':
lookipvers = V6;
break;
case 'd': case 'd':
debug = 1; debug = 1;
break; break;
@ -799,6 +802,15 @@ rwrite(Job *job, Mfile *mf)
goto send; goto send;
} }
/*
* toggle ipv4 lookups
*/
if(strncmp(job->request.data, "ipv4", 4)==0){
lookipvers ^= V4;
syslog(1, logfile, "ipv4lookups %d", (lookipvers & V4) != 0);
goto send;
}
/* /*
* toggle ipv6 lookups * toggle ipv6 lookups
*/ */